Literally, if you believe it, it will exist; if you don't believe it, it won't.

The real meaning of this sentence is that when you have a truly sincere belief in God, you can see the existence of God; The more you don't believe in God, the less God will show you, because your morality can't meet God's requirements.

Buddhists say that once the Buddha's nature comes out, it will shake the ten worlds. The most important thing for the Buddha is the practitioner who believes in the Buddha. You don't even believe in God, and you may even denigrate God Buddha. How can a great and sacred God Buddha appear to you at will? This is one of the reasons why many atheists can't understand those who believe in God.

an idea from Buddhism.

Extended information:

Features

"If you believe, you will have it; if you don't believe, you will have it." This is a typical thinking mode of "I think, therefore I am".

The characteristic is that all problems are focused on "I", "I believe there is, but I don't believe there is". The whole world revolves around "I", and "I" is the only correct "truth" in the world and the universe.

In fact, people all know that many things that they don't know or don't believe for a while don't mean they don't exist, and their existence doesn't depend on whether they believe or not, just as the existence of the sun doesn't change because the blind can see.